Hi Rich,
Some great questions in your post and some really interesting suggestions of new communities. As an aspiring community manager, a webinar on conceptualisaing a community sounds like a great idea! :)

I'm tempted to run a webinar just about conceptualizing a community. Here's a news release issued in The Drum: "Travel Designers will shortly be launching their own branded review and online community. The company aims to integrate the platform seamlessly within their website to provide an...